Reapply "Romania-Bulgaria-Macedonia"

This reverts commit 437e0afde4.

common/province_terrain/01_province_properties.txt

@@ -5052,8 +5052,8 @@
 3684 ={
 	winter_severity_bias = 0.70
 }
-## c_sredets 
-# b_sredets 
+## c_sofia 
+# b_sofia 
 500 ={
 	winter_severity_bias = 0.60
 }
@@ -5090,8 +5090,8 @@
 3681 ={
 	winter_severity_bias = 0.70
 }
-## c_dorostorum 
-# b_dorostorum 
+## c_silistra 
+# b_silistra 
 508 ={
 	winter_severity_bias = 0.50
 }
@@ -5296,8 +5296,8 @@
 3641 ={
 	winter_severity_bias = 0.50
 }
-### d_philippopolis 
-## c_philippopolis 
+### d_plovdiv 
+## c_plovdiv 
 # b_philippopolis 
 493 ={
 	winter_severity_bias = 0.50
@@ -5370,8 +5370,8 @@
 3627 ={
 	winter_severity_bias = 0.35
 }
-## c_zherkovo 
-# b_zherkovo 
+## c_kardzhali  
+# b_kardzhali  
 3618 ={
 	winter_severity_bias = 0.50
 }
@@ -5383,7 +5383,7 @@
 3620 ={
 	winter_severity_bias = 0.80
 }
-# b_ustra 
+# b_dzhebel  
 3621 ={
 	winter_severity_bias = 0.50
 }
@@ -5391,7 +5391,7 @@
 3622 ={
 	winter_severity_bias = 0.50
 }
-## c_rhodopes 
+## c_smolyan 
 # b_nevropkop 
 3617 ={
 	winter_severity_bias = 0.80